[Epic 4G General] drunix:
I just love coming to xda, reading a well reasoned opinion on a problem backed up by a technical explanation of how cameras handle varying light by adjusting exposure time, only to be ridiculed by rude comments declaring the OP to be "WRONG" (amongst other things), which are of course backed up by nothing.

The original poster did not claim absolute knowledge of the issue, he only stated the he *thinks* he can explain the camcorder lag. The mounds of assholes that piled on, however, left no room for doubt, the OP is clearly wrong in their eyes.

The fact of the matter is that there's a great deal of evidence supporting the OP's claim. If there's less light reflecting off of objects in the room through the lens onto the sensor, then the image will be too dark to see. In order to compensate, the camera will collect light for a longer period of time (exposure) for each frame. If that length of time is 1/60th of a second, it will collect half as much light as if it's 1/30th of a second, and thus it will be half as bright. If that length of time is 1/15th of a second, it will be four times as bright. The problem is that if, during that exposure time, objects move or the camera is turned, the light hitting the sensor is not of the same thing the whole time, and instead of making one image brighter, it ends up being a blur of the motion that occurred during that time.

In DI18, the camera was not blurry in low light, however, in EB13 it is. That can mean only one thing... the exposure time on EB13 is longer... that's what causes blur. You can argue that the camera's software should not set the exposure time to be longer, and that there is enough light to capture smoother motion by lowering the exposure time and it won't be too dark... and thus say that the bug is that they allowed it to go lower, but if you want that behavior, adjust the exposure setting when you're recording, the option is right there. You could further argue that they previously adjusted it to be brighter, even though it was not exposed for longer, but the tradeoff would have been a lower contrast, which you could also re-instate, by increasing the brightness setting.

No one introduced a software bug to make the camera blurry, sorry, it just doesn't make sense. I might get around to inspecting the framerates on each to verify this further, but probably not, because none of you have offered a competing argument that could explain it, and with as much sense as OP's argument makes, it is almost certainly correct. If someone wants to really test, take two phones, EB13 and DI18 in the same room right next to eachother and record at the same time. The EB13 will be blurrier but brighter (exposure only changed) or same brightness but with better contrast (exposure and brightness adjusted). But either way, by adjusting settings you can make them look the same.

Sorry you got flamed OP, it's much easier to say "WRONG! SOFTWARE BUG! SAMSUNG SUCKS! I'LL WAIT FOR A REAL PROGRAMMER TO RESPOND!" than to bother trying to understand or figure out what's wrong.

Also, for the one who did ask for a programmer to respond... I am a programmer (well, software architect technically) and I've been writing software, designing software, and reviewing and troubleshooting other people's code long enough to have a pretty good understanding of the types of bugs that occur, and the likelihood of there being a "bug" here just is very, very low.